Home / 11,561.90-17,345.55-3,770.78

Finding the Fourth Proportional to 11,561.90, 17,345.55 and 3,770.78

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Solution

The fourth proportional to 11,561.90, 17,345.55 and 3,770.78 is: 5,657.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,561.90 : 17,345.55 = 3,770.78 : x
  2. Step 2: Convert to fraction form
    11,561.90/17,345.55 = 3,770.78/x
  3. Step 3: Cross multiply
    11,561.90x = 17,345.55 × 3,770.78
  4. Step 4: Simplify right side
    11,561.90x = 65,406,253.03
  5. Step 5: Solve for x
    x = 65,406,253.03/11,561.90
  6. Step 6: Final answer
    x = 5,657.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.